Method of Correlation Among Fermentation Acids and Reducing Power from Substrate Degradation Applied to Investigate the Electrochemistry Process of Rumen Microbial Fuel Cells (RMFCs)

以基質降解間發酵酸與還原力相關性法探討瘤胃微生物燃料電池電化學過程

王金燦(Chin-Tsan Wang) ； 陳資生(Zih-Sheng Chen) ； 楊价民(Che-Ming Yang)

《中國機械工程學刊》 33卷3期 (2012/06) Pp. 249-255

https://doi.org/10.29979/JCSME.201206.0008

摘要

瘤胃微生物燃料電池將透過纖維基質降解後轉化為電能。本研究試圖建立基質降解發酵酸和還原力間相關性，以探討瘤胃微生物燃料電池電化學過程。結果表明有機酸產生的同時可能導致釋放電子、基質消耗和改變陽極液的還原力。此外，乙酸與丙酸比（C2/C3）和氧化還原電位（ORP）之相關性為-0.712。這些研究結果提供發酵過程有機酸和還原力間相關性說明，這將有利於改善瘤胃微生物燃料電池電性表現。

並列摘要

Microorganisms with cellulolytic properties in the rumen, the major digestive organ of ruminants, and native fiber substrate would be utilized for electricity generation in this study. Experiments made attempted to establish correlations between substrate fermentation acids and reducing power from substrate degradation by rumen microorganisms because it has been rarely noted but is important to realize the electrochemistry reaction of rumen microbial fuel cells (RMFCs). Resulting evidence shows that the production of organic acids could result simultaneously in the releasing of electrons, substrate consumption and changing the reducing power of the anolyte. In addition, the correlation between the acetate propionate ratio (C2:C3) and redox potential (ORP) was -0.712 (P＜0.05), which would further affect the theoretical voltage as the correlation between the voltage and C2:C3 was 0.687 (P＜0.05). Indirectly, negative correlation between the ORP of the anolyte and electricity was established, as was a stronger reducing power. The findings from this study provided correlations among fermentation organic acids, reducing power and electricity, which will facilitate the improvement of electricity output from RMFCs.

並列關鍵字

Correlation ； Redox potential (ORP) ； Fermentation acids ； Rumen microbial fuel cells